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The generator of AM EMFs consists of a battery-driven radiofrequency (RF) EMF generator connected to a 1.5 m long 50 ? coaxial cable, to the other end of which a stainless-steel spoon-shaped mouthpiece is connected via an impedance transformer. The RF source of the device corresponds to a class C amplifier operating at 27.12 MHz. The carrier frequency is AM with a modulation depth of 85±5%, whereas the modulation frequency is generated by a digital direct synthesiser with a resolution of 10-7. The treatment sequence is controlled by a microcontroller (Atmel AT89S8252, Fribourg, Switzerland), that is, duration of session, sequence of modulation frequencies and duration of each sequence can be programmed via PC over a RS232 interface. The RF output is adjusted to 100 mW into a 50 ? load, which results in an emitting power identical to that of the device used for the treatment of insomnia.
Q. How does current flow through the channel of a JFET after pinch off? It is seen that above the pinch off voltage at a constant value of VDS (saturation drain current, ID inc
You have been requested by your Senior Engineer to design a lift control unit (LCU) and prepare a report detailing your proposed solution. The client requires a microcontroller bas
I want proof of shockley diode equation with all steps
'Electrical drives' is a general term that is commonly used to describe both DC and AC excited motors that provide continuous rotary motion, whilst 'electrical actuators' provide l
Composition of MOSFET In a test pattern the Photomicrograph of two metal-gate MOSFETs. Probe pads for two gates and three source or drain nodes are entitled.Generally the se
Q. Show the r’s Complement? Step1- get the (r-1)'s complement Step 2- add 1 to the result ex. 935 10 9 9 9
a) Define the blending function reparanetrization. b) Four position vectors P1[0 , 0], P2[1 ,1], P3[2 ,-1] ,P4[3, 0] are provided with tangent vectors P1'[1,1] and P4'[1,1]. Cal
what is decibel
STAX Store Accumulator Indirect Instruction This instruction is used to copy data from accumulator to the memory location pointed by register pair ( only BC or DE pair).
Why memory decoding is required? To attach a memory device to the microprocessor, this is necessary to decode the address sent by the microprocessor. Decoding creates the memo
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